Fig. 3From: Two-step approach for assessing the health effects of environmental chemical mixtures: application to simulated datasets and real data from the Navajo Birth Cohort StudyAnalysis of Local Simulated Dataset (No Interaction). The forest plot describing the regression coefficients (boxes) and their 95% confidence intervals (lines) for modeling the relationship between exposure variables and outcome using three methods: (a) single step adaptive lasso (green); (b) two-step with CART followed by adaptive lasso approach (blue); and (c) two-step with RF followed by adaptive lasso approach (red). The black boxes indicate the true parameter coefficients used in the simulation. True nonzero covariates were set to include: main effects of X1, X2, X9, X12, X15, X16, and interaction effects between X1 and X12. The numbers on X axis represent the magnitude of the regression coefficientsBack to article page